. . . . . "No generic system was available, and because of the ammount of metadata records DOI's are not feasible. Therefore dedicated PID-CDI identifier solution." . . . . "2020-12-31"^^ . "2020-01-01"^^ . . "RSA" . "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCoKFb7LKlXyBB7BUvjFF9bDJNk0WxH3Xerr4H3v/VCiRVshEDl3BZVekbMMmdRe+TOPyc8AOLd9IAL2VfVVD/T0rmCHk7Pw7DQjI96mwyeXhE7f4g0WG5UT5Pxxm0Rzy7IrYnEaaVDs7dkZUt952M6qWlHfTwCQDcXJhZfLiXoMwIDAQAB" . "Jp5d5+tQCkbe72lxNyMSZWnNKHkhgYlryX1Bn0vTpb7UY6dun3jmGJOiIXpQfSUpYy4h/nk2FKbD4AW1fsoK0nlfREJ2b/gZes6tmaVZFZNXIuCy54WcX9PoqGoyaeWBoq4C0j8xtkhB2aGFdDxdtqonRwyuVHAZLlFS8GdFxv8=" . . "2022-07-29T20:57:57Z"^^ . . . .